Tech completed a service call on a single stage 2zone system. Tech noticed flood protection not up to code, zone system not compatible with single stage equipment, noticed filtration needs upgrading, blower wheel cleaning, biological growth at back of furnace supply plenum. Tech left recommendations/ estimates with home owner to better help protect and prolong life of equipment. Please review email, to respond to any estimates you can do so by email or calling in to reschedule appointments. *Thanks for choosing TE Certified if you liked your technician service today don’t hesitate to leave a 5 star review!